LCs with A-TRAC were not equipped with a rear locker. Early models with AT transmission also didn't all have a rear locker. So if it is with a manual transmission and it doesn't have a rear locker, it must have A-TRAC. And as far as I know, also around here A-TRAC was available from 2000 on.

I've forgotten where I've seen the specs when I was shopping for a HDJ100. I wanted a HDJ100 with a rear locker. And in in Europe it was only available with a manual transmission on models '98 and '99.

If I remember right all newer LCs had A-TRAC. But I'm not sure.

I decided to be on the safe side - when you drive several days in the dunes, it might be just too much for A-TRAC - at least I wanted one piece of electronic less. And all newer LCs in Europe also have AHC and if you want to buy new aftermarket shocks, you have to dump it.

I doubt it will in Morocco, but it would be useful on the wet and muddy roads around home in winter and also when it's icey. My wife will be driving the car a fair bit in winter fully loaded with children and so every safety aid helps.

I was aiming to go for the A-TRAC and then fit Air lockers to get the best of both worlds.

I have now had a chance to look at the Toyota internal revisions document and it wasn't made available in Dielels in the UK until 2005/2006 as a standard option, although it was available in the petrol models from October 1999.

I've just checked the pictures of local internet auto market. And 2002 HDJ100 has a rear locker - even with AT transmission.
Seems like you are right.
Buy a petrol version - it's even cheaper. And convert it to LPG.